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Finding the Fourth Proportional to 777,805.56, 1,166,686.47 and 425,053.44

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Solution

The fourth proportional to 777,805.56, 1,166,686.47 and 425,053.44 is: 637,568.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,805.56 : 1,166,686.47 = 425,053.44 : x
  2. Step 2: Convert to fraction form
    777,805.56/1,166,686.47 = 425,053.44/x
  3. Step 3: Cross multiply
    777,805.56x = 1,166,686.47 × 425,053.44
  4. Step 4: Simplify right side
    777,805.56x = 495,904,097,474.96
  5. Step 5: Solve for x
    x = 495,904,097,474.96/777,805.56
  6. Step 6: Final answer
    x = 637,568.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.